[OSM-newbies] How to draw land-use areas

[Jo]

Reusing the nodes of the ways seems like the correct way to define landuse
when the landuse is different on both sides of the street. If not done that
way, there are ugly with stripes/triangles between the roads and the
landuse when plotting the map at high zoom scale.

Landuse is drawn first, the road network is drawn over it. So when the
landuse is the same on both sides of the road, there is no need to draw
more than one landuse. The road simply goes over it. No problem.

Suppose I'm drawing a (large) forest. Then I draw landuse around the
treeline and roads/tracks/footways across the forest. No need to draw many
small forests. The same goes for residential/commercial or industrial
landuse.

Just my 2 cents,

Polyglot

2012/4/15 Charlotte Wolter <techlady at techlady.com>

>  Michel,
>
> **        **Thanks! That seems very sensible.
> **        **What he did, most often, was to put the margins of land use
> down the middle of the street. But, the street is not, for example, a
> residential area.
> **        **Also, because he had the margins of land use intersect with
> the street, you would have to recreate the street if the land-use margins
> changed.
>
> --C
>
>
> At 01:41 PM 4/15/2012, you wrote:
>
> Hello
> On dimanche 15 avril 2012 at 19:53, Charlotte Wolter wrote :
> >          In the process of remapping work by "blars," I've come
> > across a way to draw land use that is new to me. He draws the
> > land-use areas out to the middle of the streets. For example, if he
> > is specifying a city block as "residential," he draws the outline
> > down the middle of the surrounding streets, and all the points in the
> > outline intersect with the points that create the street.
> >          Is this the way land sue should be done?
>
> Non, I think this is wrong, either the landuse include the road or it
> doesn't, but it would be strange if it included only half of it.
>
> And with that you would end up with incorrect geometry if you have two
> different landuse on each side of the road, if you use the road as the
> border for the areas they will end up sharing a border, which they don't
> as
> there is the road between them.
>
> Of course, there are some case where it can be different, like country or
> regional borders which may actually be defined as being in the center of
> the
> road (I know it happens for rivers, I don't know if the case exists with
> roads), but those are not modelled as areas and it seems to me more the
> exception than the rule.
>
> --
> Renaud Michel
>
> _______________________________________________
> newbies mailing list
> newbies at openstreetmap.org
>  http://lists.openstreetmap.org/listinfo/newbies
>
> **
>
> ** Charlotte Wolter
>
> 927 18th Street Suite A
> Santa Monica, California
> 90403
> +1-310-597-4040
> techlady at techlady.com
> Skype: thetechlady
>
> *The Four Internet Freedoms*
> Freedom to visit any site on the Internet
> Freedom to access any content or service that is not illegal
> Freedom to attach any device that does not interfere with the network
> Freedom to know all the terms of a service, particularly any that would
> affect the first three freedoms.
>
>
> _______________________________________________
> newbies mailing list
> newbies at openstreetmap.org
> http://lists.openstreetmap.org/listinfo/newbies
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/newbies/attachments/20120415/78908298/attachment-0001.html>